Caterpillar 3412E Camshaft Parts Catalog

The Caterpillar 3412E is a powerhouse V12 diesel engine widely used in marine propulsion, offshore platforms, power generation, and heavy industrial applications. Known for its balance of strength and reliability, the 3412E depends on precise camshaft function to deliver controlled valve timing, efficient combustion, and consistent horsepower output.

This catalog section focuses on camshafts and related components for the Caterpillar 3412E, offering operators, rebuilders, and fleet managers OEM-quality solutions that keep engines performing under demanding duty cycles. With over 40,000 satisfied customers worldwide, Diesel Pro Power supplies camshaft assemblies and supporting parts that fit the Caterpillar 3412E exactly as intended, ensuring long-term dependability.

Complete Camshaft for Caterpillar 3412E

The camshaft is at the heart of the valve train, orchestrating intake and exhaust valve operation with precision timing. For the Caterpillar 3412E, maintaining a properly functioning camshaft is crucial to optimizing combustion efficiency, maximizing horsepower, and ensuring smooth torque delivery.

• Engine Coverage – Built specifically for Caterpillar 3412E marine and industrial engines.

• Durability – Manufactured with hardened surfaces to withstand long service intervals in high-load applications.

• Applications – Ideal for complete overhauls, rebuilds, or targeted replacements where valve timing accuracy is critical.

When replacing the camshaft on a 3412E, it is best practice to inspect all related bushings, gears, lifters, and keys to ensure smooth installation and long-lasting performance.

Camshaft Woodruff Key for Caterpillar 3412E

The camshaft woodruff key provides secure alignment between the camshaft and its gear. In high-horsepower Caterpillar 3412E applications, precision is non-negotiable. A worn or damaged key can lead to valve timing drift, poor combustion, and even catastrophic failure.

• Fit & Compatibility – Designed to lock camshaft components in place with OEM-level precision.

• Reliability – Ensures secure torque transfer between the camshaft and gear during heavy-duty cycles.

• Best Practice – Always replace keys when swapping gears or camshafts during a rebuild to eliminate play and misalignment.

Camshaft Bushings for Caterpillar 3412E

The camshaft bushings provide essential rotational support inside the engine block, reducing friction and maintaining proper alignment. For the Caterpillar 3412E, bushings are available in different widths to suit various rebuild needs.

Standard Camshaft Bushing – 1.00" Wide

This option ensures consistent camshaft support for standard-duty 3412E applications. It reduces friction and extends the life of both camshaft and engine block surfaces.

Wide Camshaft Bushing – 1.30" Wide

The wider bushing is engineered for added stability under high load conditions. Marine propulsion systems and industrial engines operating at sustained RPMs benefit from the extra surface area, which distributes wear more evenly.

Both options are precision-machined to Caterpillar specifications, ensuring an exact fit and long-term durability in all 3412E service environments.

Camshaft Gear for Caterpillar 3412E

The camshaft gear transmits crankshaft motion to the camshaft, enabling exact valve timing. For the Caterpillar 3412E, maintaining gear integrity is essential to synchronizing the valve train and ensuring efficient fuel burn.

• High-Strength Construction – Heat-treated for durability in heavy-duty cycles.

• Precision Machined – Maintains accurate meshing with crankshaft gears, preventing timing issues.

• Marine & Industrial Use – Handles continuous operation under demanding power requirements.

Replacing the camshaft gear during a rebuild minimizes risks of premature wear and keeps the entire valve train operating smoothly.

Valve Lifters (Tappets) for Caterpillar 3412E

The valve lifters, also known as tappets, transfer camshaft motion directly to the valves. In a Caterpillar 3412E, lifters are constantly under load and require high-quality replacements to maintain engine efficiency.

• Functionality – Ensures smooth transfer of camshaft lobe motion to the pushrods and valves.

• Wear Resistance – Built from premium materials to endure high contact stress and continuous operation.

• Best Practice – Lifters should always be inspected and replaced alongside the camshaft to prevent uneven wear.

Why Buy Caterpillar 3412E Camshaft Parts from Diesel Pro Power

Trusted by 40,000+ Customers Worldwide

Operators across marine, industrial, and power generation sectors rely on Diesel Pro Power for genuine-quality Caterpillar replacement parts. Our reputation is built on consistent performance, reliability, and customer satisfaction.

OEM-Quality Fit and Function

Every camshaft, gear, bushing, key, and valve lifter in our catalog is engineered to meet Caterpillar standards. This ensures perfect compatibility, precise timing, and extended service life for your 3412E.

Fast Worldwide Shipping

Downtime is costly. That’s why we ship parts quickly, ensuring you can return your Caterpillar 3412E to service without delays.

Dedicated 3412E Catalog

Our catalog is designed for clarity. Every camshaft-related part is organized for easy selection, eliminating confusion and ensuring you order the exact component you need.

Expert Technical Support

Our team of specialists understands Caterpillar 3412E applications inside and out. Whether you’re performing a top-end rebuild, full overhaul, or single-component replacement, we can help you identify the correct part with confidence.

Applications of Caterpillar 3412E Camshaft Components

The Caterpillar 3412E engine is widely deployed across multiple sectors, and camshaft reliability is critical in each of these environments:

• Marine Propulsion – Used in yachts, fishing vessels, ferries, and tugboats, where sustained power and timing accuracy are essential.

• Offshore Oil & Gas – Drives pumps and compressors on offshore rigs, demanding continuous reliability.

• Power Generation – Provides backup and prime power in critical facilities, where precision combustion ensures fuel efficiency.

• Heavy Industrial Machinery – Operates in mining, construction, and material handling applications requiring robust torque output.

Maintenance Tips for 3412E Camshaft & Valve Train

1. Regular Inspections – Check camshaft lobes, lifters, and bushings during scheduled service intervals.

2. Oil Quality – Maintain clean lubrication to reduce wear on camshaft surfaces.

3. Replace in Sets – Always pair new camshafts with fresh lifters, bushings, and gears for best results.

4. Alignment Checks – Ensure gears and keys are properly seated to prevent timing drift.

5. Early Intervention – Address wear signs like excessive valve noise or misfiring before they escalate into costly failures.